package com.heima.wemedia.service.impl;

import com.baomidou.mybatisplus.core.toolkit.Wrappers;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.heima.common.exception.CustomException;
import com.heima.model.common.constants.AdminConstants;
import com.heima.model.common.dtos.ResponseResult;
import com.heima.model.common.enums.AppHttpCodeEnum;
import com.heima.model.wemedia.dtos.WmUserDto;
import com.heima.model.wemedia.pojos.WmUser;
import com.heima.utils.common.AppJwtUtil;
import com.heima.wemedia.mapper.WmUserMapper;
import com.heima.wemedia.service.WmUserService;
import org.apache.commons.lang3.StringUtils;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

import java.util.HashMap;
import java.util.List;
import java.util.Map;

@Service
public class WmUserServiceImpl extends ServiceImpl<WmUserMapper, WmUser> implements WmUserService {


    /**
     * 登录
     * @param dto
     * @return
     */
    @Override
    public ResponseResult login(WmUserDto dto) {
        //1.检查参数
        if (StringUtils.isEmpty(dto.getName()) || StringUtils.isEmpty(dto.getPassword())) {
            return ResponseResult.errorResult(AppHttpCodeEnum.PARAM_INVALID, "用户名或密码错误");
        }
        //2 查询自媒体用户
        List<WmUser> resultList = list(Wrappers.<WmUser>lambdaQuery()
                .eq(WmUser::getName, dto.getName())
                .eq(WmUser::getStatus, AdminConstants.PASS_AUTH.intValue()));
        if (resultList == null || resultList.size()==0) {
            throw new CustomException(AppHttpCodeEnum.DATA_NOT_EXIST);
        }

        //3 比对密码
        WmUser wmUser = resultList.get(0);
        String pswd = DigestUtils.md5DigestAsHex((dto.getPassword() + wmUser.getSalt()).getBytes());
        if (!wmUser.getPassword().equals(pswd)) {
            throw new CustomException(AppHttpCodeEnum.LOGIN_PASSWORD_ERROR);
        }

        //4 返回jwt结果
        Map<String, Object> map = new HashMap<>();
        map.put("token", AppJwtUtil.getToken(wmUser.getId().longValue()));
        wmUser.setPassword("");
        wmUser.setSalt("");
        map.put("user", wmUser);

        return  ResponseResult.okResult(map);
    }
}
